well you are right that its easier for sight reading but you still need to know what you are doing. heheh. if you dunno how to play a Gmaj7, whichever way you write it, you'll still be stumped. i wrote down a few random basic notes and played them sort of in sequence but i still cant really sight read it properly (still too slow. my mental arithmetic is appalling).

I?m not sure what to make of this. I think the Gmaj7b5 system makes more sence :?

About the uppercase letters:

I: Tonica
IV: Subdominant
V: Dominant

Am i right?

That is correct about the upper/lower case but there is more...upper case is major lower is minor!!
if you took some time to study im sure you would find this way being much quicker...

peace
Blank

Maybe, but i just never used it before. Maybe i?m not that far in theory yet :wink: